From fd97ea25358c43bf5e0778a96489044e69333793 Mon Sep 17 00:00:00 2001 From: Brumi-2021 <86470699+Brumi-2021@users.noreply.github.com> Date: Sun, 11 May 2025 23:53:18 +0200 Subject: [PATCH] Updated NOAA (markdown) --- NOAA.md | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/NOAA.md b/NOAA.md index dd86b63..81372f2 100644 --- a/NOAA.md +++ b/NOAA.md @@ -45,8 +45,7 @@ Hackrf, like the rest of SDR receivers, have not enough sensitivity to receive The most simple antenna you can use is a [V-dipole antenna](https://lna4all.blogspot.com/2017/02/diy-137-mhz-wx-sat-v-dipole-antenna.html), consists of two wires or rods of 52cm, spread apart by 120 degrees. Instead of using a protactor you can use trigonometry, the distance between the tips of each rod should be around 90cm. -![image](https://github.com/user-attachments/assets/9c159b8f-c8cd-48d1-b544-0f5747b95c4c) - +![image](https://github.com/user-attachments/assets/ffb0e67b-f52b-4a9d-bd29-69681e38fc17) You can tune , inputting directly any of the 3 x above current NOAA Satellite frequencies (NOAA 15: 137.62MHz. NOAA 18: 137.9125MHz. NOAA 19: 137.1MHz) ,and check at what exact time , the satellite will be visible in his orbital pass. (there are many programms and web links to check the exact local time pass to your ground station place ) . Here you have, some predict and tracking web links examples :